Before i present you my problem i have to inform you that my english are not so good, sorry.

So, i'm 17 and i live in Greece. The day after tomorrow we are going to this school trip for 3 days (2 nights) and I want to make a move to a girl I like. We have be talking for about one year , but not like friends. It's much more teasing and conversations with no meaning. She has given me a lot of IOI's so I'm sure about making a move. But the problem is I CANT. Every time we talk we end up with this shit talk and I feel very awkward making a move. It's almost impossible to make a move. My goal is to show her that I like her and then kiss her. I was thinking about talking to her just normal and then take her to a place where I can kiss her. But what do I say? I don't want to go for the kiss and get rejected , because this will ruin my trip. I don't want feel awkward in the rest of the trip. I want to have fun with my friends , not thinking about the rejection and every time I see her turn my back and feeling awkward. So my main problem is how I show her that I like her (is it a good idea to tell her that I like her and if she likes me too kiss her, or just go for the kiss with no questions asked and no sign of what I'm about to do) and how I approach for the kiss. And how the hell do i get of this meaningless talk and start talking so i can show her my intensions.
Need help as soon as possible
(we are leaving in 2 days)
Thank you in advance.

If it'd be awkward for you, it'd probably be awkward for her. It would appear incongruent with your actions so far.If you touch girls a lot, they know you might like them, and they want to kiss you. If you're friendly and don't touch a girl, she won't expect it.

So if you're asking how to show your intentions, touch her arm, put your arm around her, hug her a lot, maybe hold her hand in private. She'll make it clear if she's interested or not.

A good kino tip, you can touch her while doing other things. An example of this is leaving your arm around her in conversation or letting your hand rest touching hers when you sit next to her. These are good, but they need to come intermingled with intentional kino. Holding her hand, hugging her, and brushing things off her face are all examples of intentional kino.